<template>
  <div class="dashboard-container">
    <div class="app-container">
      <el-card>
        <el-tabs>
          <!-- 放置页签 -->
          <el-tab-pane label="角色管理">
            <!-- 新增角色按钮 -->
            <el-row style="height: 60px">
              <el-button
                icon="el-icon-plus"
                size="small"
                type="primary"
                @click="hAdd"
                >新增角色</el-button
              >
            </el-row>
            <!-- 表格 -->
            <el-table :data="list" border>
              <el-table-column label="序号" width="120" type="index" />
              <el-table-column label="角色名称" width="240" prop="name" />
              <el-table-column label="描述" prop="description" />
              <el-table-column label="操作">
                <!-- 作用域插槽获取表格组件内部的数据 #default="{row}" -->
                <template #default="{ row }">
                  <el-button size="small" type="success" @click="hAssignPer(row.id)">分配权限</el-button>
                  <el-button size="small" type="primary" @click="hEdit(row)">编辑</el-button
                  >
                  <el-button @click="hDel(row.id)" size="small" type="danger">删除</el-button>
                </template>
              </el-table-column>
            </el-table>

            <el-row
              type="flex"
              justify="center"
              align="middle"
              style="height: 60px"
            >
              <!-- 分页组件 -->
              <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="pageParams.page"
                :page-sizes="[2, 3, 5, 10, 20]"
                :page-size="pageParams.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total"
              >
              </el-pagination>
            </el-row>
          </el-tab-pane>
        </el-tabs>
      </el-card>
      <!-- 新增或者编辑角色的弹层 -->
      <el-dialog
        @closed="restForm"
        :title="isEdit?'编辑角色':'新增角色'"
        :visible.sync="showDialog"
      >
        <el-form
          ref="roleForm"
          :model="roleForm"
          :rules="rules"
          label-width="100px"
        >
          <el-form-item label="角色名称" prop="name">
            <el-input v-model="roleForm.name" />
          </el-form-item>
          <el-form-item label="角色描述" prop="description">
            <el-input v-model="roleForm.description" />
          </el-form-item>
        </el-form>
        <!-- 底部 -->
        <el-row slot="footer" type="flex" justify="center">
          <el-col :span="6">
            <el-button size="small">取消</el-button>
            <el-button size="small" type="primary" @click="hSubmit"
              >确定</el-button
            >
          </el-col>
        </el-row>
      </el-dialog>
      <!-- 分配权限 -->
      <el-dialog  title="分配权限" :visible.sync="perDialog" >
        <assignPermissions v-if="perDialog" @close="perDialog=false" :curId="curId" />
      </el-dialog>
    </div>
  </div>
</template>

<script>
import { addRoles, delRoles, getRoles, updateRoles } from "@/api/settings";
import assignPermissions from './assignPermissions.vue'
export default {
  components:{
    assignPermissions
  },
  data() {
    return {
      curId:'',
      perDialog:false,
      list: [], //存储所有的角色列表
      pageParams: {
        page: 1, //页码值
        pagesize: 2, //每页显示的条数
      },
      total: 0, // 总的条数
      // currentPage4: 2,
      showDialog: false,
      //收集表单的数据对象
      roleForm: {
        name: "",
        description: "",
      },
      isEdit: false, //默认是新增 ||true为编辑
      rules: {
        name: [
          { required: true, message: "请输入角色的名称", trigger: "blur" },
        ],
        description: [
          { required: true, message: "请输入角色的描述", trigger: "blur" },
        ],
      },
    };
  },
  created() {
    this.loadRoles();
  },
  methods: {
    hAssignPer(id){
      this.curId=id
      this.perDialog=true
    },
        hDel(id) {
      this.$confirm("您确定要删除该角色吗, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(async () => {
          //确定之后实现删除
          const res = await delRoles(id);
          console.log(res);
          if (res.code === 10000) {
            this.$message.success(res.message);
            //判断当前页面是否只剩下1条数据
            if(this.list.length===1){
              this.pageParams.page--
              if(this.pageParams.page<=0){
                this.pageParams.page=1
              }
            }
            this.loadRoles();
          }
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
        });
    },
    //重置校验规则和数据
    restForm() {
      //resetFields 让表单里面的数据回到初始的状态，如果一开始表单有数据，回到有数据的状态，如果没有那就置空
      //重置校验规则
      this.$refs.roleForm.resetFields();
      // 重置数据
      this.roleForm = {
        name: "",
        description: "",
      };
    },
    hEdit(row) {
      // console.log(row);
      //row是表格的数据对象
      //将row对象的引用地址交给表单 this.roleForm
      //浅拷贝
      this.roleForm = { ...row }; //当打开弹层的时候，表单里面就填充了数据
      this.isEdit = true;
      this.showDialog = true;
    },
    //编辑功能
    async doEdit() {
      try {
        const res = await updateRoles(this.roleForm);
        if (res.code !== 10000) return this.$message.error(res.message);
        this.$message.success(res.message);
        //重新获取数据重新渲染页面
        //需要计算出最大的页码值
        //改变当前的页码值 pageParams.page=maxPage
        this.loadRoles();
        this.showDialog = false;
      } catch (error) {
        console.log(error);
      }
    },
    hAdd() {
      this.isEdit = false;
      this.showDialog = true;
    },
    hSubmit() {
      //兜底校验
      this.$refs.roleForm.validate((valid) => {
        if (!valid) return; //校验失败
        this.isEdit ? this.doEdit() : this.doAdd();
      });
    },
    //实现角色新增
    async doAdd() {
      try {
        const res = await addRoles(this.roleForm);
        if (res.code !== 10000) return this.$message.error(res.message);
        this.$message.success(res.message);
        //重新获取数据重新渲染页面
        //需要计算出最大的页码值
        //改变当前的页码值 pageParams.page=maxPage
        this.total++;
        const maxPage = Math.ceil(this.total / this.pageParams.pagesize);
        this.pageParams.page = maxPage;
        this.loadRoles();
        this.showDialog = false;
      } catch (error) {
        console.log(error);
      }
    },
    //获取角色列表
    async loadRoles() {
      try {
        const res = await getRoles(this.pageParams);
        // console.log(res,'getRoles');
        this.list = res.data.rows;
        this.total = res.data.total;
      } catch (error) {
        console.log(error);
      }
    },
    //当每页显示条数进行切换时触发  val每页显示的条数
    handleSizeChange(val) {
      console.log(`每页 ${val} 条`);
      this.pageParams.page = 1;
      this.pageParams.pagesize = val;
      this.loadRoles();
    },
    //当前页码值切换时触发 val当前的页码值
    handleCurrentChange(val) {
      console.log(`当前页: ${val}`);
      this.pageParams.page = val;
      this.loadRoles();
    },
  },
};
</script>